CN109580349B - Asphalt cold-patch mixture performance test device and test method - Google Patents
Asphalt cold-patch mixture performance test device and test method Download PDFInfo
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- CN109580349B CN109580349B CN201811516320.7A CN201811516320A CN109580349B CN 109580349 B CN109580349 B CN 109580349B CN 201811516320 A CN201811516320 A CN 201811516320A CN 109580349 B CN109580349 B CN 109580349B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 58
- 239000000203 mixture Substances 0.000 title claims abstract description 53
- 238000011056 performance test Methods 0.000 title claims abstract description 20
- 238000010998 test method Methods 0.000 title abstract description 3
- 238000012360 testing method Methods 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000035515 penetration Effects 0.000 claims description 36
- 238000005056 compaction Methods 0.000 claims description 15
- 238000006757 chemical reactions by type Methods 0.000 claims description 3
- 239000003102 growth factor Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
Abstract
The invention relates to the technical field of road traffic, in particular to a device and a method for testing the performance of an asphalt cold-patch mixture. The asphalt cold-patch mixture performance test device comprises a device base, wherein a pressure-bearing support is arranged on the device base, a first pressure plate is connected onto the pressure-bearing support, a pressure head is connected to the lower surface of the first pressure plate, a cross beam is arranged on the pressure-bearing support, a limiting hole is formed in the cross beam, a reset spring is arranged between the cross beam and the first pressure plate, the reset spring is sleeved on the pressure head, a sliding test piece base is arranged under the pressure head, and the sliding test piece base is installed on the device base. The performance test device and the test method for the asphalt cold-patch mixture can conveniently and accurately realize the performance test of the asphalt cold-patch mixture, can evaluate the strength of the asphalt cold-patch mixture and the forming rule thereof, and provide reference for the selection and the application condition of the asphalt cold-patch material.
Description
Technical Field
The invention relates to the technical field of road traffic, in particular to a device and a method for testing the performance of an asphalt cold-patch mixture.
Background
Asphalt pavement has become the pavement structure type of the most widely used high-grade highways with its good pavement properties. However, with the increasing increase of vehicle flow, the problem of asphalt pavement pit diseases is increasingly obvious, the asphalt pavement pit is one of the most common diseases which are difficult to treat in daily maintenance, and particularly in cold winter or wet rainy season, the conventional hot patching material cannot timely and effectively repair the pit. The cold patch asphalt repair material realizes cold mixing and cold paving, can be produced and mixed once, stored for later use, taken at any time, free from secondary heating, convenient to use, quick and environment-friendly. The damage appears in low temperature season or rainy and humid season, and traditional hot patching material can not be repaired in time, and the damage will further enlarge, and then influence the performance and the life on road surface. Indoor and field researches are carried out by scholars at home and abroad to realize timely repair of asphalt pavement pits in low-temperature seasons or rainy and humid seasons, and a plurality of effective methods are provided. The special asphalt concrete block specially used for repairing the pit slot is prefabricated by related colleges and scientific research departments in China to make up for the short slab of the common cold-patch material still existing in the early strength, the strength forming time and the final strength, and the performance indexes of the cold-patch material in the three aspects cannot be well simulated and expressed by the existing detection means.
Therefore, how to more conveniently and accurately detect the performance of the green cold-patch mixture becomes a technical problem to be solved urgently.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a device and a method for testing the performance of an asphalt cold-patch mixture, which can conveniently and accurately realize the performance detection of the asphalt cold-patch mixture.
(II) technical scheme
In order to solve the technical problem, the invention provides a performance test device for an asphalt cold-patch mixture, which comprises a device base, wherein a pressure-bearing support is arranged on the device base, a first pressure plate is rotatably connected onto the pressure-bearing support, a pressure head is connected below the first pressure plate, a cross beam is arranged on the pressure-bearing support, a limiting hole for the pressure head to pass through is formed in the cross beam, a reset spring is arranged between the cross beam and the first pressure plate, the reset spring is sleeved on the pressure head, a sliding test piece base is arranged right below the pressure head, and the sliding test piece base is installed on the device base.
Furthermore, the pressure-bearing support comprises a front pressure-bearing column and a rear pressure-bearing column, the bottom ends of the front pressure-bearing column and the rear pressure-bearing column are respectively and correspondingly connected with the left end and the right end of the device base, and the length of the front pressure-bearing column is greater than that of the rear pressure-bearing column.
Specifically, the left end and the right end of the cross beam are respectively connected with the upper part of the front pressure bearing column and the top of the rear pressure bearing column.
Specifically, one end of the first pressure plate is rotatably connected with the top end of the front pressure-bearing column through a first bearing, the other end of the first pressure plate is rotatably connected with one end of the second pressure plate through a second bearing, the other end of the second pressure plate is rotatably connected with one end of a third pressure plate through a third bearing, and the other end of the third pressure plate is rotatably connected with the top end of the rear pressure-bearing column through a fourth bearing.
Further, a pressure rod is connected to the upper surface of the first pressure plate.
Furthermore, the bottom of the pressure head is connected with a penetration pressure needle.
Specifically, a load sensor is arranged in the sliding test piece base.
Specifically, the top of pressure head is equipped with spacing boss, reset spring set up in spacing boss with between the crossbeam.
Further, the device base comprises a front support base, a rear support base and a support bottom plate connected between the front support base and the rear support base; the front pressure-bearing column is connected with the front supporting seat, and the rear pressure-bearing column is connected with the rear supporting seat.
Further, the sliding test piece base comprises an upper base, a lower base and a side base for connecting the upper base and the lower base, wherein the supporting base plate is arranged between the upper base and the lower base, and the side base is fixedly connected with the supporting base plate through a fixing screw.
The invention also provides a performance test method of the asphalt cold-patch mixture, which adopts the performance test device of the asphalt cold-patch mixture and specifically comprises the following steps:
s1, preparing the asphalt cold-patch mixture into a standard Marshall test piece;
s2, performing single-side compaction on the Marshall test piece for 10 times;
s3, putting the compacted Marshall test piece with the compaction surface upward on a sliding test piece base to ensure that the lower surface of the Marshall test piece is tightly attached to the upper surface of the sliding test piece base;
s4, zeroing the reading of the load sensor;
s5, pressing the first pressure plate with force to enable the pressure head to rapidly penetrate into the Marshall test piece, wherein the whole penetration process is controlled within 2S;
and S6, reading the reading on the load sensor, and taking the maximum reading during penetration as the penetration strength of the asphalt cold-patch mixture.
Further, the performance test method of the asphalt cold-patch mixture further comprises the following steps:
forming at least 15 of the marshall test pieces through the steps S1-S5, and recording the compaction forming time of each marshall test piece; if the asphalt cold-patch mixture is a reaction type cold-patch material, testing the penetration strength once every 20min in 2 hours after compaction forming, and then testing the penetration strength once every 1 hour; if the asphalt cold-patch mixture is a solvent type cold patch, testing the penetration strength once every 6 hours and then once every 12 hours in 24 hours after compaction forming;
drawing the obtained time and penetration intensity data into a penetration intensity curve;
selecting a first inflection point and a last inflection point in the penetration strength curve, and recording the time corresponding to the first inflection point and the time corresponding to the last inflection point as t1And t2And the time point when the slope of the fitting curve is constant and less than 10 percent is marked as t3Let us remember t1Initial setting time, t3For the final setting time, d is defined1，d2，d3Respectively corresponding to t on x-axis of the fitted curve1，t2，t3Slope of the curve of (D)1＝d3-d1， D2＝d2-d1，D＝D1+D2Then, the calculation formula of the intensity increase factor is as follows:
S＝t1/D
in the formula: s is a strength growth factor of the asphalt cold-patch mixture; t is t1The time corresponds to the first inflection point of the penetration intensity curve.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
according to the device and the method for testing the performance of the asphalt cold-patch mixture, the Marshall test piece made of the asphalt cold-patch mixture to be tested is placed on the sliding test piece base, and the first pressure plate is controlled to move downwards to drive the pressure head to penetrate through the limiting hole and penetrate into the Marshall test piece, so that the performance of the asphalt cold-patch mixture is conveniently and accurately tested, the strength of the asphalt cold-patch mixture and the forming rule of the asphalt cold-patch mixture can be evaluated, and references are provided for the selection and the application conditions of the asphalt cold-patch mixture.
Drawings
FIG. 1 is a front view of a device for testing the performance of an asphalt cold-patch mixture according to an embodiment of the present invention;
fig. 2 is a three-dimensional structure diagram of a performance testing apparatus for an asphalt cold-patch mixture according to an embodiment of the invention.
In the figure: 1: sliding the test piece base; 101: an upper base; 102: a lower base; 103: a side base; 2: a device base; 201: a front support base; 202: a rear support base; 203: a support base plate; 3: a front pressure-bearing column; 4: a rear pressure-bearing column; 5: a cross beam; 6: a third pressure plate; 7: a pressure head; 701: a limiting boss; 8: a first pressure plate; 9: a pressure lever; 10: penetrating a pressure needle; 11: a second pressure plate; 12: a limiting hole; 13: fixing screws; 14: a return spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example one
As shown in fig. 1-2, an embodiment of the present invention provides an asphalt cold-patch mixture performance test apparatus, including an apparatus base 2, where the apparatus base 2 is provided with a pressure-bearing support, the pressure-bearing support is rotatably connected with a first pressure plate 8, a pressure head 7 is connected below the first pressure plate 8, the pressure-bearing support is provided with a cross beam 5, the cross beam 5 is provided with a limiting hole 12 through which the pressure head 7 passes, a return spring 14 is provided between the cross beam 5 and the first pressure plate 8, the return spring 14 is sleeved on the pressure head 7, a sliding test piece base 1 is provided right below the pressure head 7, and the sliding test piece base 1 is installed on the apparatus base 2.
When the device is used, a Marshall test piece made of the asphalt mixture to be tested is placed on the sliding test piece base 2, the first pressure plate 8 is controlled to move downwards, and the pressure head 7 is driven to penetrate through the limiting hole 12 and penetrate into the Marshall test piece, so that the performance test of the green cold-patch mixture is conveniently and accurately realized.
Further, the pressure-bearing support comprises a front pressure-bearing column 3 and a rear pressure-bearing column 4, the bottom ends of the front pressure-bearing column 3 and the rear pressure-bearing column 4 are respectively and correspondingly connected with the left end and the right end of the device base 2, and the length of the front pressure-bearing column 3 is greater than that of the rear pressure-bearing column 4.
Specifically, the left and right ends of the cross beam 5 are connected to the upper portion of the front pressure-bearing column 3 and the top portion of the rear pressure-bearing column 4, respectively.
Specifically, one end of the first pressure plate 8 is rotatably connected to the top end of the front pressure-bearing column 3 through a first bearing, the other end of the first pressure plate 8 is rotatably connected to one end of a second pressure plate 11 through a second bearing, the other end of the second pressure plate 11 is rotatably connected to one end of a third pressure plate 6 through a third bearing, and the other end of the third pressure plate 6 is rotatably connected to the top end of the rear pressure-bearing column 4 through a fourth bearing.
Further, a pressure bar 9 is attached to the upper surface of the first pressure plate 8 to apply pressure to the first pressure plate 8.
Further, a penetration pressure needle 10 is connected to the bottom of the pressure head 7, so that the penetration operation of the pressure head 7 into the marshall test piece is facilitated.
Specifically, a limiting boss 701 is arranged at the top of the pressure head 7, and the return spring 14 is arranged between the limiting boss 701 and the cross beam 5.
Further, the device base 2 includes a front support base 201, a rear support base 202, and a support base plate 203 connected between the front support base 201 and the rear support base 202.
Wherein, the front pressure-bearing column 3 is connected with the front supporting seat 201, and the rear pressure-bearing column 4 is connected with the rear supporting seat 202.
Further, the sliding test piece base 1 includes an upper base 101, a lower base 102, and a side base 103 connecting the upper base 101 and the lower base 102, wherein the supporting base plate 203 is disposed between the upper base 101 and the lower base 102, and the side base 103 is connected and fixed with the supporting base plate 203 through a fixing screw 13.
Specifically, the sliding test piece base 1 is further provided with a load sensor for detecting the penetration strength of the pressure head 7 into the marshall test piece.
Example two
The embodiment of the invention also provides a performance test method of the asphalt cold-patch mixture, which adopts the performance test device of the asphalt cold-patch mixture described in the embodiment I and specifically comprises the following steps:
and S1, preparing the asphalt cold-patch mixture into a standard Marshall test piece.
And S2, performing single-side compaction on the Marshall test piece for 10 times.
And S3, putting the compacted Marshall test piece on a sliding test piece base with the compaction surface upward without demoulding, and enabling the lower surface of the Marshall test piece to be tightly attached to the upper surface of the sliding test piece base.
And S4, zeroing the reading of the load sensor.
And S5, pressing the first pressure plate with force to enable the pressure head to rapidly penetrate into the Marshall test piece, wherein the whole penetration process is controlled within 2S.
And S6, reading the reading on the load sensor, and taking the maximum reading during penetration as the penetration strength of the asphalt cold-patch mixture.
Further, the performance test method of the asphalt cold-patch mixture further comprises the following steps:
forming at least 15 of the marshall test pieces through the steps S1 to S5, and recording the compaction forming time of each marshall test piece.
And if the asphalt cold-patch mixture is a reaction type cold patch material, testing the penetration strength once every 20min in 2 hours after compaction forming, and then testing the penetration strength once every 1 hour.
If the asphalt cold-patch mixture is a solvent type cold patch, testing the penetration strength once every 6 hours and then once every 12 hours in 24 hours after compaction forming.
The resulting time versus penetration strength data were plotted as a penetration strength curve.
Selecting a first inflection point and a last inflection point in the penetration strength curve, and recording the time corresponding to the first inflection point and the time corresponding to the last inflection point as t1And t2And the time point when the slope of the fitting curve is constant and less than 10 percent is marked as t3Let us remember t1Initial setting time, t3For the final setting time, d is defined1，d2，d3Respectively corresponding to t on x-axis of the fitted curve1，t2，t3Slope of the curve of (D)1＝d3-d1， D2＝d2-d1，D＝D1+D2Then, the calculation formula of the intensity increase factor is as follows:
S＝t1/D
in the formula: s is a strength growth factor of the asphalt cold-patch mixture; t is t1The time corresponds to the first inflection point of the penetration intensity curve.
In summary, according to the performance test device for the asphalt cold-patch mixture in the embodiment of the invention, the marshall test piece made of the asphalt cold-patch mixture to be tested is placed on the sliding test piece base, and the first pressure plate is controlled to move downwards, so that the pressure head is driven to penetrate through the limiting hole and penetrate into the marshall test piece, and the performance test of the asphalt cold-patch mixture is conveniently and accurately realized.
The performance test method for the asphalt cold-patch mixture can accurately and quickly detect the coagulation rate and the penetration strength of the asphalt cold-patch mixture, further evaluate the strength of the asphalt cold-patch mixture and the forming rule thereof, and provide reference for the selection and the application conditions of the asphalt cold-patch material.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, unless otherwise specified, "a plurality" means one or more; "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A performance test method of an asphalt cold-patch mixture is characterized by comprising the following steps: the method adopts a performance test device for the asphalt cold-patch mixture, and specifically comprises the following steps:
s1, preparing the asphalt cold-patch mixture into a standard Marshall test piece;
s2, performing single-side compaction on the Marshall test piece for 10 times;
s3, putting the compacted Marshall test piece with the compaction surface upward on a sliding test piece base to ensure that the lower surface of the Marshall test piece is tightly attached to the upper surface of the sliding test piece base;
s4, zeroing the reading of the load sensor;
s5, pressing the first pressure plate with force to enable the pressure head to rapidly penetrate into the Marshall test piece, wherein the whole penetration process is controlled within 2S;
s6, reading the reading on the load sensor, and taking the maximum reading during penetration as the penetration strength of the asphalt cold-patch mixture;
forming at least 15 of the marshall test pieces through the steps S1-S6, and recording the compaction forming time of each marshall test piece; if the asphalt cold-patch mixture is a reaction type cold-patch material, testing the penetration strength once every 20min in 2 hours after compaction forming, and then testing the penetration strength once every 1 hour; if the asphalt cold-patch mixture is a solvent type cold patch, testing the penetration strength once every 6 hours and then once every 12 hours in 24 hours after compaction forming;
drawing the obtained time and penetration intensity data into a penetration intensity curve;
selecting the first of the penetration intensity curvesOne inflection point and the last inflection point, wherein the time corresponding to the first inflection point and the time corresponding to the last inflection point are respectively recorded as t1And t2And the time point when the slope of the fitting curve is constant and less than 10 percent is marked as t3Let us remember t1Initial setting time, t3For the final setting time, d is defined1，d2，d3Respectively corresponding to t on x-axis of the fitted curve1，t2，t3Slope of the curve of (D)1＝d3-d1，D2＝d2-d1，D＝D1+D2Then, the calculation formula of the intensity increase factor is as follows:
S＝t1/D
in the formula: s is a strength growth factor of the asphalt cold-patch mixture; t is t1Corresponding time to the first inflection point of the penetration intensity curve;
the asphalt cold-patch mixture performance test device comprises a device base, wherein a pressure-bearing support is arranged on the device base, a first pressure plate is connected to the pressure-bearing support in a rotating mode, a pressure head is connected to the lower face of the first pressure plate, a cross beam is arranged on the pressure-bearing support, a limiting hole for the pressure head to pass through is formed in the cross beam, a reset spring is arranged between the cross beam and the first pressure plate, the reset spring is sleeved on the pressure head, a sliding test piece base is arranged under the pressure head, and the sliding test piece base is installed on the device base.
2. The method of claim 1, wherein: the pressure-bearing support comprises a front pressure-bearing column and a rear pressure-bearing column, the bottom ends of the front pressure-bearing column and the rear pressure-bearing column are respectively and correspondingly connected with the left end and the right end of the device base, and the length of the front pressure-bearing column is greater than that of the rear pressure-bearing column.
3. The method of claim 2, wherein: the left end and the right end of the cross beam are respectively connected with the upper part of the front pressure bearing column and the top of the rear pressure bearing column.
4. The method of claim 2, wherein: one end of the first pressure plate is rotatably connected with the top end of the front pressure-bearing column through a first bearing, the other end of the first pressure plate is rotatably connected with one end of the second pressure plate through a second bearing, the other end of the second pressure plate is rotatably connected with one end of the third pressure plate through a third bearing, and the other end of the third pressure plate is rotatably connected with the top end of the rear pressure-bearing column through a fourth bearing.
5. The method of claim 1, wherein: the upper surface of the first pressure plate is connected with a pressure rod; the bottom of the pressure head is connected with a penetration pressure needle; and a load sensor is arranged in the sliding test piece base.
6. The method of claim 1, wherein: the top of pressure head is equipped with spacing boss, reset spring set up in spacing boss with between the crossbeam.
7. The method of claim 2, wherein: the device base comprises a front supporting seat, a rear supporting seat and a supporting bottom plate connected between the front supporting seat and the rear supporting seat; the front pressure-bearing column is connected with the front supporting seat, and the rear pressure-bearing column is connected with the rear supporting seat.
8. The method of claim 7, wherein: the sliding test piece base comprises an upper base, a lower base and a side base, wherein the side base is connected with the upper base and the lower base, the supporting base plate is arranged between the upper base and the lower base, and the side base is fixedly connected with the supporting base plate through a fixing screw.
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| CN1873390A (en) * | 2005-06-01 | 2006-12-06 | 同济大学 | Method for determining shear strength of asphalt mixture |
| CN102072840B (en) * | 2010-12-21 | 2012-06-27 | 东南大学 | Method for testing shear fatigue of asphalt mixture |
| WO2012131998A1 (en) * | 2011-03-31 | 2012-10-04 | 有限会社大東土木 | Mill |
| CN102879276B (en) * | 2012-09-21 | 2015-02-18 | 长安大学 | Integrated asphaltic mixture performance detection device |
| CN104090092A (en) * | 2014-07-02 | 2014-10-08 | 长沙理工大学 | Coarse aggregate injection test device and coarse aggregate injection test method based on asphalt mixture tester |
| CN104360048A (en) * | 2014-11-07 | 2015-02-18 | 交通运输部科学研究院 | Method for evaluating performances of normal-temperature modified road asphalt |
| CN204165978U (en) * | 2014-11-13 | 2015-02-18 | 西南交通大学 | A kind of asphalt penetration test precise testing device |
| JP6553413B2 (en) * | 2015-06-01 | 2019-07-31 | 勲 田崎 | Mobile asphalt melting pot |
| CN105352795B (en) * | 2015-10-21 | 2018-09-14 | 华南理工大学 | The method for determining bituminous paving sealing material influence depth based on uniaxial penetration test |
| CN105699632B (en) * | 2016-02-04 | 2018-06-29 | 重庆市智翔铺道技术工程有限公司 | A kind of bituminous concrete pile penetration test device |
| CN105588760B (en) * | 2016-02-29 | 2018-10-09 | 长安大学 | A kind of uniaxial penetration method of asphalt |
| CN105954119B (en) * | 2016-06-22 | 2018-08-07 | 大连理工大学 | A kind of static three axis torsional shear destructive characteristics experimental rigs of asphalt |
| CN106323757A (en) * | 2016-09-06 | 2017-01-11 | 哈尔滨工业大学 | Pouring asphalt concrete penetration test device |
| CN106950120B (en) * | 2017-02-16 | 2019-05-24 | 浙江大学 | A kind of asphalt mixture gradation optimization method under virtual state |
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Effective date of registration: 20211208 Address after: 102299 building 11, No. 738, Changliu Road, machikou Town, Changping District, Beijing (738-11) Patentee after: CHECSC HIGHWAY MAINTENANCE AND TEST TECHNOLOGY CO.,LTD. Patentee after: CHINA HIGHWAY ENGINEERING CONSULTING Corp. Patentee after: ZHONGZI DATA CO.,LTD. Address before: 100089 2nd floor, Beijing municipal building, 17 Changyun palace, Zizhuqiao, West Third Ring Road, Haidian District, Beijing Patentee before: CHECSC HIGHWAY MAINTENANCE AND TEST TECHNOLOGY CO.,LTD. Patentee before: China Highway Engineering Consulting Group Co., Ltd. |